The carousel alphabet UI made me ragequit. The letter you have selected is somewhere in the middle of the screen (completely inconsistent from left justified with the video you have selected), indistinguishable from the rest of the alphabet by size, placement, or color. The only thing that lets you know your selection is a light grey box around tiny light white text (genius) that becomes invisible if the video you are watching in the background is also a light color at the top of the screen. It's like they said to themselves, "Yeah, scrolling through the entire alphabet is annoying, but how can we go one step further and make it as INFURIATING as possible?"